When compiling with 'allmodconfig', some of drivers need cmpxchg64(),
xtensa does not supply 64-bit implementation for 'xchg', so use the
'generic' implementation.
e.g. (for next-20130527 tree):
drivers/block/blockconsole.c:164:2: error: implicit declaration of function
‘cmpxchg64’ [-Werror=implicit-function-declaration]
Signed-off-by: Chen Gang <gang.c...@asianux.com>
---
arch/xtensa/include/asm/cmpxchg.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/xtensa/include/asm/cmpxchg.h
b/arch/xtensa/include/asm/cmpxchg.h
index d9ab131..370b26f 100644
--- a/arch/xtensa/include/asm/cmpxchg.h
+++ b/arch/xtensa/include/asm/cmpxchg.h
@@ -93,6 +93,7 @@ static inline unsigned long __cmpxchg_local(volatile void
*ptr,
((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
(unsigned long)(n), sizeof(*(ptr))))
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
/*
* xchg_u32
--
1.7.7.6
--
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